I need help w/ this ty

What is the standard form of -5x^2+2x^4-11+x^3+3x

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab